JP2002036797A - Transfer material with blocking resisting property - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a transfer material having a blocking resisting property. SOLUTION: With a transfer material 1 at least a decorative layer and an adhesive layer on one surface of a base film is formed. Tg (glass transition temperature) of the adhesive layer is -45 to 250 deg.C. After the base film side of the transfer material is fixed on a supporting platform 8 of a release weight measuring device, one end of a cellophane adhesive tape of one inch width 9 is stuck to the adhesive layer of the transfer material 1, while the other end of the tape is supported by a spring balance. When the weight (release weight) on the spring balance is measured under the conditions that an angle formed by the supporting platform and the cellophane adhesive tape 9 is always kept at 45 degrees and the cellophane adhesive tape 9 is pulled at a speed of 25 mm/s, the release weight between the base film and the decorative layer shall be set to 0.08 to 1.47 N.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transfer material having a blocking resistance for transferring a decorative layer to a plastic product or a metal product to decorate a picture.

[0002]

2. Description of the Related Art In many cases, a transfer material is usually produced by forming at least a decorative layer and an adhesive layer on one surface of a long base film of several hundred meters by continuous printing. At this time, the transfer material receives frictional heat by being in contact with the printing plate that rotates at high speed for a long time, and is wound up in a roll shape.
It will be stored until it is used for transfer or simultaneous molding transfer. When wound in a roll, the adhesive layer and the base film come into direct contact with a strong fastening force. When used for transfer or simultaneous molding transfer, the transfer material is unwound from a roll to a plane and used.

[0003]

By receiving frictional heat, the adhesive layer of the transfer material becomes active and becomes adhesive, and chemically adheres to the base material film of the transfer material directly in contact therewith. Therefore, when unwinding for use in transfer or simultaneous molding transfer, the decorative layer / adhesive layer of the upper transfer material partially migrates to the base film of the lower transfer material,
Unnecessary ink layers adhere to the lower transfer material, causing the transfer material to become dirty. Hereinafter, such a phenomenon is referred to as “blocking”. Incidentally, the mechanism by which blocking occurs is that when the adhesive layer and the substrate film come into direct contact, the adhesive force F1 between the substrate film and the decorative layer, the adhesive force F2 between the adhesive layer and the substrate film, In the relationship, F1 <
It is considered that blocking occurs when F2 is reached. On the other hand, even if the adhesive layer of the transfer material is activated due to frictional heat, in order to prevent the adhesive layer of the upper transfer material from being transferred together with the decorative layer to the base film of the lower transfer material. That is, it is conceivable to coat the back surface of the transfer material with a powdery silicone resin in order to prevent the blocking from occurring. However, since the silicone resin is in a powdery state, the silicone resin is transferred to the adhesive layer of the upper transfer material in the activated state, and the adhesive strength between the adhesive layer and the object to be transferred is reduced. The present invention
In order to solve the above problems, it is an object to provide a transfer material which has blocking resistance and does not have the above-mentioned problems.

[0004]

Means for Solving the Problems In order to achieve the above object, the present invention is configured as follows. That is, the transfer material has at least a decorative layer and an adhesive layer formed on one surface of the base film, and the Tg (glass transition temperature) of the adhesive layer is −
After fixing the base film side of the transfer material to the support of the peeling weight measuring device, a 1-inch cellophane adhesive tape (JIS 2
152Z), one end of which is adhered and the other end is supported by a spring balance, and a support base and a cellophane adhesive tape (JIS 2152)
Z) always keeps an angle of 45 degrees, and 2
Cellophane adhesive tape (JIS 21) at a speed of 5 mm / sec.
52Z) When the weight (peeling weight) of the spring scale when pulling was measured, the peeling weight between the base film and the decorative layer was 0.0
It was configured to be 98 to 1.47 N (1 to 150 g weight).

Further, according to the present invention, in the above structure, a back ink layer is formed on the other surface of the base film, and the back ink layer comprises at least one of a conductive resin, a conductive filler and a surfactant. It may be made of an ink contained in a thermosetting resin or an active energy ray-curable resin.

[0006] This invention having the above structure, the surface resistance of the transfer material may be a ¹⁰ 3 ^{~10 1 1 Ω.}

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION The transfer material of the present invention is a transfer material in which at least a decorative layer and an adhesive layer are formed on one surface of a base film, and the Tg (glass transition temperature) of the adhesive layer is -45.
After fixing the base film side of the transfer material to a support of a peeling weight measuring device, a 1-inch cellophane adhesive tape (JIS 215) is applied to the adhesive layer of the transfer material.
2Z) (hereinafter simply referred to as "cellophane adhesive tape")
When one end of the cellophane adhesive tape is pulled at a speed of 25 mm / sec, the angle between the support base and the cellophane adhesive tape is always kept at 45 ° while the other end is supported by a spring scale. When the weight (peeling weight) of the spring balance was measured, the peeling weight between the base film and the decorative layer was 0.0098.
１1.47 N (1 to 150 g weight).

[0008] The substrate film 2 of the transfer material 1 of the present invention comprises:
Polyethylene terephthalate resin film, acrylic resin film, vinyl chloride resin film, polypropylene resin film, polyethylene resin film,
It is preferable to use a TPE resin film or the like.

The decorative layer 3 of the transfer material 1 of the present invention is for decorating the surface of an object to be transferred, and is made of polyvinyl resin, polyamide resin, polyacrylic resin, polyurethane resin, polyvinyl resin. An ink containing an acetal-based resin, an alkyd-based resin, or the like as a resin binder and a pigment or dye of an appropriate color as a colorant may be used. The thickness of the decorative layer 3 is 0.5 to 50 × 10 ⁻⁴ mm.
(0.5 to 50 μm). The decoration layer 3 may be provided entirely or partially according to the decoration to be expressed. When it is desired to decorate a design exhibiting metallic luster, the metallic coloring layer 4 becomes a part of the ink layer. Examples of the metal coloring layer 4 include a layer formed by a so-called metal vapor deposition method, a printing layer containing a pigment that produces a bright color, and a layer made of a metal foil. The layer formed by the metal evaporation method includes aluminum, indium, chromium, gold, silver, and the like having a thickness of 50 to 80 × 10 ⁻⁸ cm (500 to 800 Å). Examples of the metal evaporation method include a vacuum evaporation method, an ion plating method, a sputtering method, and an electron beam evaporation method. Examples of the pigment that produces a brilliant color include metal particles such as aluminum, titanium, and bronze, and pearl pigments obtained by coating mica with titanium oxide. When the adhesiveness between the metal coloring layer 4 as the decorative layer 3 and the adhesive layer is insufficient, the two-component liquid is applied between the metal coloring layer 4 and the adhesive layer 6 or between the metal coloring layer 4 and the release layer 5. A layer of a curable urethane-based resin, a thermosetting resin such as a melamine-based or epoxy-based resin, or a thermoplastic resin such as a vinyl chloride copolymer resin can be interposed therebetween. The decorative layer 3 may be a transparent layer by using a transparent resin or the like.

A release layer 5 and a release layer may be formed between the base film 2 and the decorative layer 3. The peeling layer 5 is a layer that remains on the surface of the transferred object together with the decorative layer 3 even when the base film 2 is peeled. The release layer is a layer that does not remain on the surface of the transferred object when the base film 2 is peeled off, and is peeled off from the decorative layer 3 together with the base film 2. As the release layer 5, a polyethylene terephthalate resin, a polyacryl resin, a vinyl resin, a polyurethane resin, a polyethylene resin, a polypropylene resin, or the like may be used.

The adhesive layer 6 of the transfer material 1 according to the present invention is for bonding the above-mentioned layers to the surface of an object to be transferred or an injection-molded article. If the portion to be bonded is the entire surface, the adhesive layer 6 may be formed on the entire surface. If the part you want to adhere is partial,
The adhesive layer 6 may be formed partially. The adhesive layer 6 is preferably made of a heat-sensitive and pressure-sensitive resin suitable for the material to be transferred or the injection-molded article. For example, when the material of the injection molded product is a polyacrylic resin, it is preferable to use a polyacrylic resin or a vinyl chloride-vinyl acetate copolymer resin. Also,
When the material of the injection molded product is a polyphenylene oxide / polystyrene resin, a polycarbonate resin, a styrene copolymer resin, or a polystyrene mixed resin, a polyacryl resin, a polystyrene mixed resin having an affinity for these resins, It is preferable to use a polyamide resin or the like.
Further, when the material of the injection molded product is a polypropylene resin, a chlorinated polyolefin resin, a chlorinated ethylene-
It is preferable to use a vinyl acetate copolymer resin, a cyclized rubber, a coumarone indene-based resin, or the like. Further, when the material of the injection molded product is a polyurethane resin, it is preferable to use a polyurethane resin or the like. Further, the adhesive layer 6 has a Tg (glass transition temperature) of -45 to 250C. The Tg refers to a temperature at which the molecular Brownian state shifts from a state in which the molecular Brownian movement is active and easy to flow as the temperature of the polymer material is lowered as the temperature is lowered. Tg is -4
If the temperature is lower than 5 ° C., the adhesive layer 6 becomes unnecessarily large in stickiness, so that the adhesive layer 6 is likely to be peeled off inside the adhesive layer 6 or between the adhesive layer 6 and the decorative layer 3. Further, the so-called film-forming property of the adhesive layer 6 becomes too high, so that it is difficult to shear, and so-called burrs are easily generated. Even if an adhesive layer is formed, the adhesive property is not exhibited by heating. On the other hand, T
If g exceeds 250 ° C., the adhesive layer hardens into a glass-like state and becomes brittle, so that the adhesion to the transfer object is weakened and transfer becomes impossible, or the adhesive layer 6 is cracked by heat and pressure during transfer. This impairs the aesthetics of the transcript.

A back ink layer 7 may be formed on the other side of the base film of the transfer material 1 of the present invention. Back ink layer 7
Is preferably made of an ink containing at least one of a conductive resin, a conductive filler and a surfactant in a thermosetting resin or an active energy ray-curable resin. The thickness of the back ink layer 7 is 0.5 to 50 × 10 ^−4.
mm (0.5 to 50 μm) is preferred. 0.5 × 10
^{If the thickness is} less than ⁻⁴ mm, the content of the conductive resin, the conductive filler or the surfactant is insufficient, and the antistatic property becomes insufficient. On the other hand, if the thickness exceeds 50 × 10 ⁻⁴ mm, the back ink layer 17 becomes brittle and the back ink layer
Cracks occur, and a part of the back ink layer 7
This is because the adhesive adheres to the adhesive layer that is in direct contact with the back ink layer and reduces the adhesion to the transfer object. Examples of a method for forming the back ink layer 7 include various coating methods such as a gravure coating method, a roll coating method, and a comma coating method, and various printing methods.

Examples of the conductive resin include polypyrrole, polythiophene, polyaniline, polyisothianaphthene, polyazulene, poly-p-phenylene obtained by electrolytic oxidation polymerization, polyphenylene, poly-phenylene obtained by chemical oxidation polymerization.
p-phenylenevinylene, poly-2,5-phenylenevinylene, polyacetylene obtained by the soluble intermediate method, poly-p-phenylenevinylene, poly-p-phenylene, poly-2,5-phenylenevinylene, pyrolysis There are polyacetylene and polyperinaphthalene obtained.

As the conductive filler, carbon-based conductive oil furnace black, acetylene black,
Thermal black, graphite, PAN-based carbon fiber, pitch-based carbon fiber, metallic Ag powder, Ni powder, Cu powder,
Ag-plated Cu powder, brass fiber, Al fiber, Cu fiber, stainless steel fiber, Al flake, Cu flake, Ni flake, brass flake, hydrophilic rubber particles and the like. Resin in the range of 1 to 65% by weight due to antistatic properties. Is preferably mixed. If the amount is less than 1% by weight, the antistatic property is hardly obtained. On the other hand, if the content exceeds 65% by weight, the resin layer becomes brittle and easily peels in the layer.

Examples of the surfactant include anionic surfactants such as sulfonates, sulfates, and phosphates; tertiary amines such as alkyldimethylamine;
Cationic activator obtained by quaternization with benzyl chloride, dimethyl sulfate, etc., amphoteric activator obtained by addition reaction of tertiary amine, imidazoline, etc. with chloroacetic acid, activator esterified with fatty acid and polyhydric alcohol And nonionic activators obtained by adding an alkylene oxide to higher alcohols, alkylphenols, alkylamines, etc., in the range of 1 to 15% by weight due to antistatic properties. Is preferably mixed with the resin. If it is less than 1% by weight, no antistatic property is obtained. If the content exceeds 15% by weight, the hygroscopicity is increased, and the moisture affects the ink layer of the transfer material, and the adhesion to the transfer object and the like is reduced. In addition, since the surfactant has a property of bringing in moisture, it exhibits conductivity.
Further, in the present invention, the surfactant is not only dissolved in alcohol or the like, but is contained in a thermosetting resin or the like described later, so that the surfactant is hardly dissolved even when washed with water.

As the thermosetting resin, amino resin, melamine resin, phenol resin, urea resin, furan resin, alkyd resin, diallyl phthalate resin, epoxy resin, silicon resin, polyurethane resin And an unsaturated polyester resin.
Further, the resins may be mixed. In order to cure, it is preferable to apply heat of 80 ° C. or more.

As the active energy linear curable resin, oligomers such as ester acrylate, urethane acrylate, epoxy acrylate, and melamine acrylate having an acryloyl group can be used.
a resin obtained by polymerization with a known type of photopolymerization initiator, such as iba Geigy) or SP-150 (Adeka), or a combination of an oligomer having an aryl group and an acryloyl group at a molecular terminal with a polythiol, Examples of the resin include a resin obtained by causing a radical addition reaction in the presence of the known type of photopolymerization initiator. In this case, after coating the back ink layer 7 on the base film 2, it is preferable to cure the base film 2 by irradiating it with active energy rays. Unless cured, the viscosity of the back ink layer 7 does not disappear, and the back ink layer 7 adheres to the adhesive layer 6.

When the back ink layer 7 is made of an ink containing at least one of a conductive resin, a conductive filler, and a surfactant in a thermosetting resin or an active energy ray-curable resin, It has the following effects. As described in the prior art, the transfer material is subject to friction when it comes into contact with the printing plate that rotates at high speed for a long time, but the base material of the transfer material generates static electricity due to the friction of the transfer material. Since fine foreign matters and dust are electrically attached to the transfer material, the foreign matter may be caught or dents may be generated on the surface of the transferred material. On the other hand, in order to prevent fine foreign matter and dust from electrically adhering to the transfer material even when subjected to friction, it is conceivable to previously apply a charge removing agent as a back ink layer to the other surface of the base film. However, this static eliminator has no stickiness because only a surfactant such as an anionic surfactant is dissolved in alcohol or the like and no resin binder is used. For this reason, when the transfer material has to be washed with water in order to pattern the vapor deposition layer as one constituent layer of the decorative layer, the transfer material is easily dissolved and removed. The antistatic property is lost during transfer and simultaneous transfer of molding, and fine foreign matter and dust easily adhere to this back ink layer during transfer and simultaneous transfer of molding, and foreign matter bites and dents occur on the surface of the transferred object Was causing it. Also,
If the surfactant is simply dissolved with alcohol, etc., only the surfactant remains on the back of the film when the alcohol etc. evaporates. The surfactant migrated to the mold and caused corrosion of the mold. Therefore, in the present invention, since the back ink layer 7 is made of an ink containing at least one of a conductive resin, a conductive filler and a surfactant, even if the transfer material is subjected to friction, the base material of the transfer material The film is less likely to be charged with static electricity, and no foreign matter bites or dents are generated on the surface of the transfer object. Since there is no need to apply a neutralizing agent (surfactant), even if the transfer material is washed with water, the antistatic property is not lost. Also, since the alcohol and the like do not evaporate, only the surfactant remains on the back surface of the film without remaining, and when the transfer material comes into contact with the mold at the time of simultaneous transfer during molding, the surfactant is added to the mold. No migration and no corrosion of the mold.

The transfer material 1 of the present invention has a surface resistance of 10 ³ to 10 ¹¹ Ω. If it exceeds 10 ¹¹ Ω, the effect of preventing adhesion of dust, dust and the like is weakened. On the other hand, if it is less than 10 ³ Ω, the conductivity tends to be strong. When the conductivity is increased, the back ink layer 7 is scorched, and a part of the scorched portion is transferred to the adhesive layer 6, which may lower the adhesion to the transfer target. In particular, the surface resistance value is particularly preferable because a conductive filler is more likely to have higher conductivity than a conductive resin mixed therein.

The base material side of the transfer material 1 is supported on a support 8.
Then, one end of a 1-inch wide cellophane adhesive tape 9 is attached to the adhesive layer 6 of the transfer material 1, and the other end is supported by a spring balance 10 to form the adhesive layer 6 with the cellophane adhesive tape 9. Angle A always keeps 45 degree angle and 25mm
When the weight (peeling weight) of the spring balance 10 when pulling the cellophane adhesive tape 9 at a speed of / sec, the peeling weight between the base film 2 and the decorative layer 3 is 0.0098 to 1.0. 47N
(1 to 150 g weight) (see FIG. 2). If the peeling weight is less than 0.0098 N, F1 <F2, and blocking occurs easily when unwinding for use in transfer or simultaneous molding transfer. On the other hand, when the peeling weight exceeds 1.47 N, peeling between the base film and the decorative layer or the like becomes difficult when used for transfer or simultaneous transfer of molding, and transfer failure occurs. In order to fix the base material side of the transfer material 1 to the support 8, it is advisable to bond the transfer material 1 with a double-sided tape. The reason why the adhesive width of the cellophane adhesive tape 9 is preferably one inch is that if the adhesive width exceeds 1 inch, the scale of the peeling weight becomes difficult to show a constant value when the cellophane adhesive tape 9 is peeled off. Cellophane adhesive tape 9
If the width is smaller than 1 inch, it is difficult to attach the adhesive layer 6 to the adhesive layer 6 and the efficiency of measuring the peeling weight is impaired. Even when a back ink layer is formed on the substrate film side of the transfer material 1, the back ink layer 7 and the support base 8 may be bonded with a double-sided tape. As a device for keeping the angle 45 ° constant and maintaining a speed of 25 mm / sec, there is the following peeling weight measuring device. For example, on the support 8
In some cases, a horizontal moving body 15 that can move on the support 8 is installed. Bellows belt 13 is attached to horizontal moving body 15, and gear 1 of motor 14 fixed to support base 8
By rotating the gear 18 by engaging the bellows belt 8 with the bellows belt 13, the horizontal moving body 1 moves on the transfer object mounting table 12.
5 moves. An inclined plate 16 having a 45-degree inclination is installed on a horizontal moving body 15. The spring balance 10 is fixed on the slope plate 16 with the hook 11 down (see FIG. 3). As the cellophane adhesive tape 9 comes off,
Since the position of the spring balance 10 has to be raised, the spring balance 10 is fixed so as to gradually move upward along the surface of the slope plate 16 by the length of the cellophane adhesive tape 9 to be peeled off. ing. In this way, the transfer material 1 and the cellophane adhesive tape 9 adhered to the support table 8 are formed.
Is always kept at an angle of 45 degrees, and 25
When the cellophane adhesive tape 9 is pulled at a speed of mm / sec, the peeling weight between the base film and the decorative layer can be measured. FIG. 3 shows a state in which the cellophane adhesive tape 9 is being peeled off from the transfer material. The transfer material of the present invention can be used for roll transfer, up-down transfer, vacuum press transfer, injection molding (simultaneous molding transfer), and the like.

[0021]

EXAMPLE 1 A window of a mobile phone was manufactured under the following conditions. A back ink layer made of a melamine-based resin ink was formed on one surface of a base film made of a polyester film having a thickness of 38 × 10 ⁻⁴ mm (38 μm) by a printing method, and was once wound into a roll. Next, a release layer is formed on the other surface of the base film using an acrylic ultraviolet curable resin ink, and a decorative layer is formed thereon using an acrylic resin ink and an aluminum evaporation layer, The deposited layer was washed with water for patterning, and finally, an adhesive layer was formed using vinyl chloride-vinyl acetate copolymer resin ink to obtain a transfer material. The surface resistance value of the transfer material of this embodiment is TOA Ele
tronics. Ltd. SUPERMEGOH
As measured by MMETERSM-8215, the surface resistance before and after water washing was 10 ⁸ Ω. The Tg (glass transition temperature) of the adhesive layer of this embodiment is 74 ° C. After the back ink layer side of this transfer material is fixed to a support base with a double-sided tape, a 1-inch cellophane is added to the adhesive layer of the transfer material. One end of the adhesive tape is attached, and the other end is supported by a spring balance. The angle between the adhesive layer and the cellophane adhesive tape always keeps an angle of 45 degrees, and the cellophane adhesive tape is pulled at a speed of 25 mm / sec. When the weight (peeling weight) of the spring balance was measured, the peeling weight between the base film and the decorative layer was about 0.09 N.
Met. Eleven sheets of transfer material having an area of 2 cm ² were stacked with the surface on which the adhesive layer was formed facing downward, and a load of about 4.95 N was applied under an environment of a temperature of 60 ° C.
After standing for 4 hours, the result in the blocking resistance test in which the sheets were peeled off one by one from above was also obtained. In this example, the first to tenth sheets could be peeled off one by one beautifully. The transfer material of this example was used for simultaneous transfer during molding. Also,
Eleven sheets of transfer material having an area of 2 cm ² were superposed on each other with the surface on which the adhesive layer was formed facing downward, left under a temperature of 60 ° C. under a load of about 4.95 N for 24 hours, and The results of the blocking resistance test in which the adhesive film was peeled off one by one from three sheets out of the ten sheets in the comparative example described later clearly showed that a phenomenon in which the substrate film directly contacting the adhesive layer occurred in three of the ten sheets. I couldn't peel it off. After the formation of the adhesive layer, the transfer material of 1000 m was wound into a roll and stored for 300 hours in an environment at 27 ° C. Example 1
In the Comparative Example, blocking did not occur until about 890 m from the unwinding, but thereafter, blocking occurred until the unwinding was completed. As a comparative example, a layer having the same layer configuration as in Example 1 was used except that the back ink layer was not provided.

Example 2 A window of a telephone was manufactured under the following conditions. Thickness 2
On one surface of a substrate film composed of a 5 × 10 ⁻⁴ mm (25 μm) polyester film, a back ink layer composed of an amino resin ink was formed by a printing method, and was once wound into a roll. Next, a release layer is formed on the other surface of the base film using an acrylic resin ink, a decorative layer is formed thereon using an acrylic resin ink, and finally, a chlorinated polypropylene resin ink is used. To form a transfer material. The Tg (glass transition temperature) of the adhesive layer of this embodiment is 80 ° C. After fixing the back ink layer side of the transfer material to the support with a double-sided tape, a 1-inch cellophane is applied to the adhesive layer of the transfer material. One end of the adhesive tape is stuck, and the other end is supported by a spring scale, so that the angle between the adhesive layer and the cellophane adhesive tape always maintains an angle of 45 degrees, and
When the weight (peeling weight) of the spring balance when pulling the cellophane adhesive tape at a speed of 5 mm / sec was measured, the peeling weight between the base film and the decorative layer was 0.049 N. Also,
Eleven transfer materials each having an area of 2 cm ² were superposed on each other with the surface on which the adhesive layer was formed facing down, and a load of about 4.9 N was applied under an environment of a temperature of 60 ° C. for 24 hours. The results in a blocking resistance test in which the sheets were peeled off one by one were also obtained. In this embodiment, 1st to 10th sheets
We could peel off one by one beautifully. In addition, transfer material 2c
Eleven sheets each having an area of m ² were superposed on each other with the surface on which the adhesive layer was formed facing downward, and about 4.9 in an environment at a temperature of 60 ° C.
After standing for 24 hours under a load of N, the sheet was peeled off one by one from above. The results of the blocking resistance test showed that five out of ten sheets could not be peeled off neatly in Comparative Examples described later. As a comparative example, a layer having the same layer configuration as in Example 2 was used, except that there was no back ink layer.

Example 3 A telephone window was manufactured under the following conditions. Thickness 3
A back ink layer made of a melamine-based resin ink was formed on one surface of a base film made of a polyester film of 8 × 10 ⁻⁴ mm (38 μm) by a printing method, and was once wound into a roll. Next, a release layer is formed on the other surface of the base film using an acrylic ultraviolet curable resin ink, a decorative layer is formed thereon using an acrylic resin ink, and finally vinyl chloride acetate is formed. An adhesive layer was formed using a vinyl copolymer resin ink to obtain a transfer material. The surface resistance value of the transfer material of the present embodiment is determined by TOA Electronic.
s. Ltd. SUPERMEGOHMMETERS
As measured by M-8215, the surface resistance before and after the water washing was 10 ⁸ Ω. The Tg (glass transition temperature) of the adhesive layer of this example is 74 ° C. After the back ink layer side of the transfer material is fixed to the support, the adhesive layer of the transfer material is coated with a 1-inch wide cellophane adhesive tape. One end is adhered, and the other end is supported by a spring balance. The angle between the adhesive layer and the cellophane adhesive tape always keeps 45 degrees, and the spring when pulling the cellophane adhesive tape at a speed of 25 mm / sec. When the weight (peeling weight) of the scale was measured, the peeling weight between the base film and the decorative layer was about 0.0294N. In addition, 11 sheets of a transfer material having an area of 2 cm ² were stacked with the surface on which the adhesive layer was formed facing down, and a load of 4.9 N was applied under an environment of a temperature of 60 ° C. for 24 hours. 1 from above
The results in the blocking resistance test of peeling off each sheet were also obtained. In this example, the first to tenth sheets could be peeled off one by one beautifully. The transfer material of this example was used for simultaneous transfer during molding. Eleven transfer materials each having an area of 2 cm ² were stacked with the surface on which the adhesive layer was formed facing downward, and a load of 4.9 N was applied under an environment of a temperature of 60 ° C.
After standing for 4 hours, the sheet was peeled off from the top one by one.
In five of the sheets, a phenomenon in which the base material film directly in contact with the adhesive layer adhered occurred and could not be removed neatly. As a comparative example, a layer having the same layer configuration as in Example 1 was used except that the back ink layer was not provided.

Example 4 A window of a mobile phone was manufactured under the following conditions. Back surface ink composed of an ink in which a polyacetylene resin as a conductive resin is contained in an amino resin as a thermosetting resin on one surface of a base film made of a polyester film having a thickness of 38 × 10 ⁻⁴ mm (38 μm). The layer was formed by a printing method, and was once wound into a roll. next,
A release layer is formed on the other surface of the base film using an acrylic ultraviolet curable resin ink, and a decorative layer is formed thereon using an acrylic resin ink and a vapor deposited layer of aluminum. The substrate was washed with water for patterning, and finally an adhesive layer was formed using a vinyl chloride-vinyl acetate copolymer resin ink to obtain a transfer material. The surface resistance of the transfer material of the present embodiment is determined by TOA Electronics. Ltd. The surface resistance before and after washing with water was 10 ⁸ Ω as measured by SUPERMEGOHMMETERSM-8215 manufactured by Toshiba Corporation. Even after 300 shots (the number of injections of the molten resin), no corrosion occurred inside the mold. The Tg (glass transition temperature) of the adhesive layer in this example is 74 ° C., and after fixing the back ink layer side of this transfer material to a support,
Attach one end of a 1-inch wide cellophane adhesive tape to the adhesive layer of the transfer material and support the other end with a spring scale, so that the angle between the adhesive layer and the cellophane adhesive tape always keeps an angle of 45 degrees, and When measuring the weight (peeling weight) of the spring scale when pulling the cellophane adhesive tape at a speed of 25 mm / sec,
The peeling weight between the base film and the decorative layer was about 0.078N. Also, the transfer material having an area of 2 cm ² is
Eleven sheets were stacked with the surface on which the adhesive layer was formed facing down, and after applying a load of 4.9 N under an environment of a temperature of 60 ° C., and allowed to stand for 24 hours, the results of the blocking resistance test in which the sheets were peeled off one by one from above were also observed. Obtained. In this embodiment, the first to first sheets
It was possible to peel off one sheet at a time until the 0th sheet. The transfer material of this example was used for simultaneous transfer during molding. As a comparative example, in the case of a transfer material having a back ink layer by gravure coating using a solution obtained by dissolving an anionic surfactant in alcohol as a surfactant, the other layer configuration being the same as that of this embodiment The surface resistance before water washing was 10 ¹¹ Ω. The surface resistance value after washing with water was 10 ¹² Ω, which was lower than that of this example, and the surface resistance value was not stable. Further, when 110 shots (the number of injections of the molten resin), corrosion occurred inside the mold. In addition, 11 sheets of a transfer material having an area of 2 cm ² were stacked with the surface on which the adhesive layer was formed facing down, and a load of 4.9 N was applied under an environment of a temperature of 60 ° C. for 24 hours. The results of the blocking resistance test of peeling off one by one from the top are 10 in the comparative example.
In five of the sheets, a phenomenon in which the base material film directly in contact with the adhesive layer adhered occurred and could not be removed neatly. This is probably because the anion activator was dissolved and removed during the patterning of the deposited layer.

Example 5 A window of a telephone was manufactured under the following conditions. Thickness 3
8 × 10^-4mm (38μm) polyester film
As a conductive filler on one side of the base film consisting of
Aluminum flakes as a thermosetting resin
Back ink layer composed of ink contained in min-based resin
Was formed by a printing method and once wound up in a roll shape.
Next, an acrylic resin ink is applied to the other surface of the base film.
To form a release layer, and apply acrylic resin
A decorative layer is formed using a vapor deposition layer of
Rinse with water to pattern the deposited layer
An adhesive layer is formed using vinyl acetate copolymer resin ink.
Transfer material. The surface resistance value of the transfer material of this embodiment is T
OA Electronics. Ltd. SUPE
Measure with RMEGOHMMMETERSM-8215
And the surface resistance before and after washing was 10⁸Ω. Ma
After 300 shots (number of injections of molten resin)
No corrosion occurred inside the mold. Adhesive layer of this example
Has a Tg (glass transition temperature) of 74 ° C.
After fixing the back ink layer side of the
Attach one end of 1 inch wide cellophane adhesive tape to the adhesive layer
Attach the other end to a spring balance, adhesive layer and cellophane adhesive
The angle made with the tape always keeps an angle of 45 degrees, and
When pulling cellophane adhesive tape at a speed of 25 mm / sec
When measuring the weight (peeling weight) of the spring balance of
The peeling weight between the rubber and the decorative layer was 0.118 N. Ma
2cm transfer material²Is the area of the adhesive layer
11 sheets are stacked with the formed surface facing down, and the temperature of 60 ° C.
After applying the load of 4.9N under the environment and leaving it for 24 hours,
In the anti-blocking test,
I also got fruit. In this embodiment, from the first sheet to the tenth sheet
Each sheet could be peeled off neatly. As a comparative example,
Anionic surfactant dissolved in alcohol as surfactant
For gravure coated transfer material
If the surface resistance before washing is 10 ¹¹Ω. After washing
Has a surface resistance of 10¹²Ω compared to this embodiment
The surface resistance was not stable due to low. In addition, 133 shows
(The number of injections of molten resin) causes corrosion inside the mold
I was born. In addition, transfer material 2cm²What was the area of
11 sheets are stacked with the surface on which the adhesive layer is formed facing downward, and
In a 60 ° C environment, apply a 4.9N load and leave for 24 hours
And then peel off one sheet at a time from above
In the comparative example, the result of
I couldn't remove it neatly. The cause is the deposition layer pattern
The anionic activator was dissolved and removed during cleaning
Conceivable.

[0026]

The transfer material having blocking resistance according to the present invention is a transfer material in which at least a decorative layer and an adhesive layer are formed on one surface of a base film, and the adhesive layer has a Tg (glass transition temperature). −45 to 250 ° C., and after fixing the back ink layer side of this transfer material to the support of the peeling weight measuring device, one end of a 1-inch cellophane adhesive tape is attached to the adhesive layer of the transfer material, The other end is supported by a spring balance, and the angle between the support base and the cellophane adhesive tape always keeps 45 °, and the weight of the spring balance when pulling the cellophane adhesive tape at a speed of 25 mm / sec ( When the peeling weight was measured, the peeling weight between the base film and the decorative layer was 0.0098.
４７1.47N. Therefore, since the back ink layer has a Tg of the adhesive layer of −45 to 250 ° C. and exhibits a specific peeling weight, even if the transfer material receives frictional heat, the adhesive layer of the transfer material is unlikely to be in an active state, The adhesive layer of the upper transfer material does not partially transfer to the base film of the lower transfer material together with the decorative layer, and the transfer material is not stained. Since it is not necessary to coat the back surface of the transfer material with the powdered silicone resin, the silicone resin does not transfer to the adhesive layer of the upper transfer material in the activated state, and the adhesive layer and the transfer target are not transferred. It is unlikely that the adhesion to the object will be reduced. That is, according to the configuration of the present invention, when the adhesive layer and the base film are wound in direct contact with each other, the adhesive force F1 between the base film and the decorative layer, In relation to the fixing force F2 with the film, F1> F2 is always satisfied, and blocking does not occur.

Further, as described in claim 2, a back ink layer is formed on the other surface of the substrate film of the transfer material of the present invention, and the back ink layer is formed of a conductive resin, a conductive filler or a surfactant. If the transfer material is made of an ink containing at least one of the agents, even if the transfer material receives friction,
The substrate film of the transfer material is less likely to be charged with static electricity, and no foreign matter bites or dents are generated on the surface of the transfer object. Since there is no need to apply a neutralizing agent (surfactant), even if the transfer material is washed with water, the antistatic property is not lost.

Further, when the surface resistance of the transfer material of the present invention is set to 10 ³ Ω to 10 ¹¹ Ω, in addition to the antistatic effect, the transfer material also exhibits the effect of preventing adhesion of foreign matter and the like. It is effective.

[Brief description of the drawings]

FIG. 1 is a sectional view showing an example of a transfer material of the present invention.

FIG. 2 is a cross-sectional view showing how to measure the peeling weight of the transfer material of the present invention.

FIG. 3 is a perspective view showing a state in which a cellophane adhesive tape is being peeled from a transfer material.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Transfer material 2 Base film 3 Decorative layer 4 Metal coloring layer 5 Release layer 6 Adhesive layer 7 Back ink layer 8 Support stand 9 Cellophane adhesive tape 10 Spring balance 11 Hooking part A Angle between adhesive layer and cellophane adhesive tape

Claims (3)

[Claims] 1. A transfer material having at least a decorative layer and an adhesive layer formed on one surface of a base film, wherein Tg of the adhesive layer is
(Glass transition temperature) is -45 to 250 ° C. After fixing the substrate film side of the transfer material to the support of the peeling weight measuring device, a 1-inch wide cellophane adhesive tape is applied to the adhesive layer of the transfer material. (JIS 2152Z)
When the other end is supported by a spring balance, the angle between the support base and the cellophane adhesive tape (JIS 2152Z) always keeps an angle of 45 degrees, and the cellophane adhesive tape (JIS 2152Z) is pulled at a speed of 25 mm / sec. When the weight (peeling weight) of the spring weigher was measured, the peeling weight between the base film and the decorative layer was 0.0098 to 1.47 N (1 to 150 g weight).
A transfer material having blocking resistance. 2. A back ink layer is formed on the other surface of the base film, and the back ink layer is formed by curing at least one of a conductive resin, a conductive filler and a surfactant with a thermosetting resin or an active energy ray. 2. The transfer material having blocking resistance according to claim 1, wherein the transfer material comprises an ink contained in a conductive resin. 3. The transfer material has a surface resistance of 10 ³ to 10 ^11.
The transfer material having blocking resistance according to claim 1, which is Ω.